NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-07-13 254-474 4XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - TX 903C OENAVILLE TX
2021-07-13 254-475 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C REAGAN TX
2021-07-13 405-970 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F GUTHRIE OK
2021-07-13 442-866 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H BRAWLEY CA
2021-07-13 442-977 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OCSD CRLS CA
2021-07-13 448-666 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TALLAHASSE FL
2021-07-13 559-944 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FRESNO CA
2021-07-13 580-202 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 5 holders which blocks → ONVOY, LLC - OK 409F CORDELL OK
2021-07-13 661-933 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BKFD NORTH CA
2021-07-13 831-946 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SANTA CRUZ CA
2021-07-13 858-377 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H POWAY CA
2021-07-13 858-944 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNDG LVTA CA
2021-07-13 925-644 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CONCORD CA
2021-07-13 925-880 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ECONTRCOST CA
2021-07-13 951-944 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ARLINGTON CA
2021-07-13 959-235 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CT 639C BRISTOL CT
2021-07-13 959-243 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C ROCKVILLE CT
2021-07-13 986-204 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - ID 192F CALDWELL ID
2021-07-12 269-318 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BATTLE CRK MI
2021-07-12 405-960 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 EDMOND OK
2021-07-12 540-906 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 PEARISBURG VA
2021-07-12 949-686 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H IRVINE CA
2021-07-12 949-779 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LAGUNA BCH CA
2021-07-09 202-987 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2021-07-09 202-990 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2021-07-09 229-274 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VALDOSTA GA
2021-07-09 419-814 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2021-07-09 470-824 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 GAINESVL GA
2021-07-09 470-827 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2021-07-09 585-569 0XXX1XXX2XXX3XXX5XXX · 3 holders which blocks → STRATUS NETWORKS 495J WARSAW NY
2021-07-09 629-258 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 NASHVILLE TN
2021-07-09 640-205 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J TUCKERTON NJ
2021-07-09 689-240 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E ORLANDO FL
2021-07-09 726-208 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2021-07-09 912-340 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HINESVILLE GA
2021-07-09 912-360 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STATESBORO GA
2021-07-09 914-463 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
2021-07-09 915-285 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H VINTON TX
2021-07-08 234-298 0XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C NOGEORGETN OH
2021-07-08 419-313 0XXX1XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C WEST UNITY OH
2021-07-08 419-364 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C WAYNESFLD OH
2021-07-08 424-699 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H TORRANCE CA
2021-07-08 580-292 0XXX1XXX2XXX3XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OK 409F INDIAHOMA OK
2021-07-08 580-415 0XXX1XXX5XXX · 3 holders which blocks → ONVOY, LLC - OK 409F MARLAND OK
2021-07-08 580-462 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OK 409F OLUSTEE OK
2021-07-08 580-502 0XXX1XXX2XXX3XXX4XXX5XXX · 5 holders which blocks → ONVOY, LLC - OK 409F WILSON OK
2021-07-08 607-396 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC- NY 384C WAVERLY NY
2021-07-08 628-299 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SNFC JUNPR CA
2021-07-08 667-331 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWSON MD
2021-07-08 754-364 0–9 XXXall 10 · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 HOLLYWOOD FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.